<template>
  <div>
    <!-- 面包屑导航 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>用户管理</el-breadcrumb-item>
      <el-breadcrumb-item>用户列表</el-breadcrumb-item>
    </el-breadcrumb>

    <!-- 卡片视图 -->
    <el-card class="box-card">
      <!-- 搜索与添加 el-row:栅格布局 gutter="20" 栏栏之间的间隔-->
      <el-row :gutter="20">
        <!-- 第一列 span="8"：列宽=8 -->
        <el-col :span="8">
          <el-input placeholder="请输入内容" v-model="queryInfo.query" clearable @clear="getUserList">
            <el-button slot="append" icon="el-icon-search" @click="getUserList"></el-button>
          </el-input>
        </el-col>
        <!-- 第二列 -->
        <el-col :span="4">
          <el-button type="primary" @click="addDialogVisible = true">添加用户</el-button>
        </el-col>
      </el-row>

      <!-- 用户列表 border:添加边框 stripe: 隔行变色-->
      <el-table :data="userlist" border stripe>
        <el-table-column type="index"></el-table-column>
        <!--索引列-->
        <el-table-column label="姓名" prop="username" sortable></el-table-column>
        <el-table-column label="邮箱" prop="email"></el-table-column>
        <el-table-column label="电话" prop="mobile"></el-table-column>
        <el-table-column label="角色" prop="role_name" sortable></el-table-column>
        <el-table-column label="状态">
          <!-- 渲染开关 slot-scope="scope"：作用域插槽，scope则为当前行的对象-->
          <template slot-scope="scope">
            <el-switch v-model="scope.row.mg_state" @change="userStateChanged(scope.row)"></el-switch>
          </template>
        </el-table-column>
        <el-table-column label="操作 (编辑/分配角色/删除)" width="190px">
          <template slot-scope="scope">
            <!-- 修改按钮 -->
            <el-button
              type="primary"
              icon="el-icon-edit"
              size="mini"
              @click="showEditDialog(scope.row.id)"
            ></el-button>

            <!-- 分配角色按钮 -->
            <el-button
              type="warning"
              icon="el-icon-setting"
              size="mini"
              @click="setRole(scope.row)"
            ></el-button>

            <!-- 删除按钮 -->
            <el-button
              type="danger"
              icon="el-icon-delete"
              size="mini"
              @click="removeUserById(scope.row.id)"
            ></el-button>
          </template>
        </el-table-column>
      </el-table>

      <!-- 分页 -->
      <el-pagination
        @size-change="handleSizeChange"
        @current-change="handleCurrentChange"
        :current-page="queryInfo.pagenum"
        :page-sizes="[2, 3, 4, 5]"
        :page-size="queryInfo.pagesize"
        layout="total, sizes, prev, pager, next, jumper"
        :total="total"
      ></el-pagination>
    </el-card>
    <!-- 添加用户的对话框 -->
    <el-dialog title="添加用户" :visible.sync="addDialogVisible" width="50%" @close="addDialogClosed">
      <!-- 内容主体区 -->
      <el-form :model="addForm" :rules="addFormRules" ref="addFormRef" label-width="70px">
        <el-form-item label="用户名" prop="username">
          <el-input v-model="addForm.username"></el-input>
        </el-form-item>

        <el-form-item label="密码" prop="password">
          <el-input v-model="addForm.password"></el-input>
        </el-form-item>

        <el-form-item label="邮箱" prop="email">
          <el-input v-model="addForm.email"></el-input>
        </el-form-item>

        <el-form-item label="手机" prop="mobile">
          <el-input v-model="addForm.mobile"></el-input>
        </el-form-item>
      </el-form>
      <!-- 底部区域 -->
      <span slot="footer" class="dialog-footer">
        <el-button @click="addDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="addUser">确 定</el-button>
      </span>
    </el-dialog>
    <!-- 修改用户信息对话框 -->
    <el-dialog title="修改用户" :visible.sync="editDialogVisible" width="50%" @close="editDialogClosed">
      <el-form :model="editForm" :rules="editFormRules" ref="editFormRef" label-width="70px">
        <el-form-item label="用户名">
          <el-input v-model="editForm.username" disabled></el-input>
        </el-form-item>
        <el-form-item label="邮箱" prop="email">
          <el-input v-model="editForm.email"></el-input>
        </el-form-item>
        <el-form-item label="电话" prop="mobile">
          <el-input v-model="editForm.mobile"></el-input>
        </el-form-item>
      </el-form>
      <span slot="footer" class="dialog-footer">
        <el-button @click="editDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="editUserInfo">确 定</el-button>
      </span>
    </el-dialog>

    <!-- 分配角色对话框 -->
    <el-dialog title="分配角色" :visible.sync="setRightDialogVisible" width="50%" @close="setRoleDialogClosed">
      <div>
        <p>当前用户: {{userInfo.username}}</p>
        <p>当前角色: {{userInfo.role_name}}</p>
        <p>
          分配新角色:
          <el-select v-model="selectedRoleId" placeholder="请选择">
            <el-option
              v-for="item in roleList"
              :key="item.id"
              :label="item.roleName"
              :value="item.id"
            ></el-option>
          </el-select>
        </p>
      </div>
      <span slot="footer" class="dialog-footer">
        <el-button @click="setRightDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="saveRoleInfo">确 定</el-button>
      </span>
    </el-dialog>
  </div>
</template>

<script>
import { async } from "q";
export default {
  data() {
    // 自定义验证邮箱的验证规则
    var checkEmail = (rule, value, callback) => {
      const regEmail = /^([a-zA-Z0-9_-])+@([a-zA-Z0-9_-])+(\.[a-zA-Z0-9_-])+/;
      if (regEmail.test(value)) {
        //合法邮箱
        return callback();
      }
      //非法邮箱
      return callback(new Error("请输入合法的邮箱"));
    };

    // 自定义验证手机号码的验证规则
    var checkMobile = (rule, value, callback) => {
      const regMobile = /^(0|86|17951)?(13[0-9]|15[012356789]|17[678]|18[0-9]|14[57])[0-9]{8}$/;
      if (regMobile.test(value)) {
        return callback();
      }
      return callback(new Error("请输入合法电话号码"));
    };

    return {
      //获取用户列表的参数对象
      queryInfo: {
        query: "", //查询的信息
        pagenum: 1, //当前的页码
        pagesize: 5 //每页记录的数量
      },
      userlist: [], //用户列表
      total: 0, //用户总数
      addDialogVisible: false, //控制添加用户对话框的显示与隐藏
      editDialogVisible: false, //控制编辑用户对话框的显示与隐藏
      //查询到的用户表单
      editForm: {},
      //添加用户的表单数据
      addForm: {
        username: "",
        password: "",
        email: "",
        mobile: ""
      },
      //添加用户表单的规则验证对象
      addFormRules: {
        username: [
          { required: true, message: "请输入用户名", trigger: "blur" },
          { min: 3, max: 18, message: "长度在 3 到 18 个字符", trigger: "blur" }
        ],
        password: [
          { required: true, message: "请输入密码", trigger: "blur" },
          { min: 6, max: 15, message: "长度在 6 到 15 个字符", trigger: "blur" }
        ],
        email: [
          { required: true, message: "请输入邮箱", trigger: "blur" },
          { validator: checkEmail, trigger: "blur" } //使用自定义的验证规则
        ],
        mobile: [
          { required: true, message: "请输入电话号码", trigger: "blur" },
          { validator: checkMobile, trigger: "blur" }
        ]
      },
      //编辑用户的表单验证对象
      editFormRules: {
        email: [
          { required: true, message: "请输入邮箱", trigger: "blur" },
          { validator: checkEmail, trigger: "blur" }
        ],
        mobile: [
          { required: true, message: "请输入手机号码", trigger: "blur" },
          { validator: checkMobile, trigger: "blur" }
        ]
      },
      //分配角色对话框显示/隐藏
      setRightDialogVisible: false,
      //分配权限的用户信息
      userInfo: {},
      //角色列表
      roleList: [],
      //已选中的角色id
      selectedRoleId: ''
    };
  },
  created() {
    this.getUserList();
  },
  methods: {
    async getUserList() {
      const { data: res } = await this.$http.get("users", {
        params: this.queryInfo
      });

      //请求失败
      if (res.meta.status !== 200) {
        return this.$message.error("获取用户列表失败！");
      }

      //成功
      this.userlist = res.data.users;
      this.total = res.data.total;
    },

    //监听 pagesize 改变的事件
    handleSizeChange(newSize) {
      // console.log(newSize);
      //更新没有显示记录数据的条数
      this.queryInfo.pagesize = newSize;
      //重新刷新数据
      this.getUserList();
    },
    // 监听 页码值 改变的事件
    handleCurrentChange(newPage) {
      // console.log(newPage);
      //更新页码
      this.queryInfo.pagenum = newPage;
      this.getUserList();
    },
    //监听 switch 开关的状态
    async userStateChanged(userInfo) {
      console.log(userInfo);
      //将修改的用户状态更新到数据库
      const { data: res } = await this.$http.put(
        `users/${userInfo.id}/state/${userInfo.mg_state}`
      );
      //更新失败
      if (res.meta.status !== 200) {
        //还原状态
        userInfo.mg_state = !userInfo.mg_state;
        return this.$message.error("更新用状态息失败！");
      }

      //成功
      this.$message.success("更新用户状态成功！");
    },
    // 监听添加用户对话框的关闭事件
    addDialogClosed() {
      this.$refs.addFormRef.resetFields();
    },
    //点击确定是添加用户
    addUser() {
      this.$refs.addFormRef.validate(async valid => {
        //表单的预验证失败 直接返回
        if (!valid) return;

        //成功 则进行网络请求进行添加用户
        const { data: res } = await this.$http.post("users", this.addForm);

        if (res.meta.status !== 201) {
          this.$message.error("添加用户失败");
        }
        this.$message.success("添加用户成功");
        //添加成功后隐藏对话框
        this.addDialogVisible = false;
        //重新刷新用户列表
        this.getUserList();
      });
    },
    //编辑对话框
    async showEditDialog(id) {
      const { data: res } = await this.$http.get("users/" + id);

      if (res.meta.status !== 200) {
        return this.$message.error("用户信息查询失败");
      }
      this.editForm = res.data;
      this.editDialogVisible = true;
    },
    // 监听修改用户对话框的关闭事件
    editDialogClosed() {
      this.$refs.editFormRef.resetFields();
    },
    //修改用户信息并提交
    editUserInfo() {
      this.$refs.editFormRef.validate(async valid => {
        if (!valid) return;

        //发起请求
        const { data: res } = await this.$http.put(
          "users/" + this.editForm.id,
          { email: this.editForm.email, mobile: this.editForm.mobile }
        );

        if (res.meta.status !== 200) {
          return this.$message.error("更新用户信息失败");
        }
        //关闭对话框
        this.editDialogVisible = false;
        //刷新数据列表
        this.getUserList();
        //提升成功
        this.$message.success("更新成功");
      });
    },
    //根据id删除用户
    async removeUserById(id) {
      //弹框
      const confirmResult = await this.$confirm(
        "此操作将永久删除该用户, 是否继续?",
        "提示",
        {
          confirmButtonText: "确定",
          cancelButtonText: "取消",
          type: "warning"
        }
      ).catch(err => err); //捕获所有异常 并返回给confirmResult

      //确认删除是返回字符串 confirm
      //取消则返回cancel
      if (confirmResult !== "confirm") {
        return this.$message.info("已取消删除");
      }
      const { data: res } = await this.$http.delete("users/" + id);

      if (res.meta.status !== 200) {
        return this.$message.error("删除失败");
      }

      this.$message.success("删除成功");
      this.getUserList();
    },
    //分配角色
    async setRole(userInfo) {
      this.userInfo = userInfo;
      //获取所有角色列表
      const { data: res } = await this.$http.get("roles");
      if (res.meta.status !== 200) {
        return this.$message.error("获取角色列表失败");
      }
      this.roleList = res.data;
      this.setRightDialogVisible = true;
    },
    //点击按钮，分配角色
    async saveRoleInfo(){
      if(!this.selectedRoleId){
        return this.$message.error('请选择要分配的角色')
      }

      const {data: res} = await this.$http.put(`users/${this.userInfo.id}/role`, {rid: this.selectedRoleId})
      if(res.meta.status !== 200){
        return this.$message.error('更新角色失败')
      }

      this.$message.success('更新角色成功')
      this.getUserList()
      this.setRightDialogVisible = false
    },
    //分配角色对话框关闭事件
    setRoleDialogClosed(){
      this.selectedRoleId = ''
      this.userInfo = {}
    }
  }
};
</script>

<style lang="less" scoped>
</style>
